/*
 *  Copyright © 2021-2023 Innospots (http://www.innospots.com)
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License. You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package io.innospots.libra.base.filter;

import lombok.extern.slf4j.Slf4j;

import javax.servlet.*;
import java.io.IOException;

/**
 * @author Smars
 * @version 1.0.0
 * @date 2022/7/26
 */
@Slf4j
public class RedirectFilter implements Filter {


    @Override
    public void doFilter(ServletRequest servletRequest,
                         ServletResponse servletResponse,
                         FilterChain filterChain) throws IOException, ServletException {
        InnospotsHttpServletRequestWrapper httpServletRequest = (InnospotsHttpServletRequestWrapper) servletRequest;
        //log.debug("uri: {}",httpServletRequest.getServletPath());
        if (httpServletRequest.isStaticResource()) {
            filterChain.doFilter(servletRequest, servletResponse);
        } else if (httpServletRequest.isAppPath()) {
            redirect(httpServletRequest, servletResponse);
        } else if (httpServletRequest.isIgnoreAuth()) {
            filterChain.doFilter(servletRequest, servletResponse);
        } else if (httpServletRequest.isApiPath()) {
            filterChain.doFilter(servletRequest, servletResponse);
        } else {
            redirect(httpServletRequest, servletResponse);
        }

    }

    private void redirect(InnospotsHttpServletRequestWrapper httpServletRequest,
                          ServletResponse servletResponse) throws ServletException, IOException {

        String redirectUrl = httpServletRequest.redirectUrl();
        if (log.isDebugEnabled()) {
            log.debug("redirect url:{}", redirectUrl);
        }

        httpServletRequest.getRequestDispatcher(redirectUrl).forward(httpServletRequest, servletResponse);
    }
}
